diff --git a/st.c b/st.c
index 2ef48b7..7d5120a 100644
--- a/st.c
+++ b/st.c
@@ -196,6 +196,8 @@ static void tsetattr(const int *, int);
 static void tsetchar(Rune, const Glyph *, int, int);
 static void tscrollup(int, int, int);
 static void tscrolldown(int, int, int);
+static void tscrollup(int, int, int);
+static void tscrolldown(int, int, int);
 static void tsetdirt(int, int);
 static void tsetscroll(int, int);
 static void tswapscreen(void);